erode edit page

do morphological erosion of pixels based on neighbor counts

Syntax

ebsd = erode(ebsd,0)
ebsd = erode(ebsd,2,'titanium')
ebsd = erode(ebsd,1,{'a' 'b' 'notIndexed'})

Input

ebsd EBSD
counts upper threshold of same phase pixels around each pixel to permit erosion
phase phase name, cell or string

Output

ebsd EBSD without the eroded pixels

Example

mtexdata small
plot(ebsd); hold on
plot(ebsd('n'),'FaceColor','k'); hold off;
mtexTitle('original');  nextAxis
ebsd = EBSD (y↓→x)
 
 Phase  Orientations     Mineral         Color  Symmetry  Crystal reference frame
     0    1197 (32%)  notIndexed          none                                   
     1    1952 (52%)  Forsterite  LightSkyBlue       mmm                         
     2    290 (7.8%)   Enstatite  DarkSeaGreen       mmm                         
     3    282 (7.6%)    Diopside     Goldenrod     12/m1        X||a*, Y||b, Z||c
 
 Properties: bands, bc, bs, error, mad, oldId
 Scan unit : um
 X x Y x Z : [33000 → 36000] x [4500 → 7500] x [0 → 0]
 Normal vector: (0,0,1)

erode isolated, nonIndexed points

ebsd = erode(ebsd,0);
plot(ebsd); hold on
plot(ebsd('n'),'FaceColor','k'); hold off;
mtexTitle('no single nonIndexed pixels');  nextAxis

erode isolated, nonIndexed points

for i=1:10
ebsd = erode(ebsd,1,{'n' 'D' 'E'});
end
plot(ebsd); hold on
plot(ebsd('n'),'FaceColor','k'); hold off;
mtexTitle('no n,D,E \(\le\) 1 neighbors, 10 iter'); nextAxis

erode isolated, nonIndexed points

for i=1:10
ebsd = erode(ebsd,2,{'n' 'D' 'E','F'});
ebsd = ebsd.fill;
end
plot(ebsd); hold on
plot(ebsd('n'),'FaceColor','k'); hold off;
mtexTitle('no n,D,E \(\le\) 2 neighbors, filled,10 iter');

Citing this page. This page is part of the documentation of MTEX, a free and open source MATLAB toolbox for analyzing and modeling crystallographic textures. It was written by The MTEX Developers and is published at https://mtex-toolbox.github.io/erode.html. If you use MTEX, or reuse text or figures from this page, in your research, please cite

F. Bachmann, R. Hielscher, H. Schaeben: Texture Analysis with MTEX - Free and Open Source Software Toolbox, Solid State Phenomena 160 (2010), 63-68. 10.4028/www.scientific.net/SSP.160.63

BibTeX
@article{bachmann2010mtex,
  author  = {F. Bachmann and R. Hielscher and H. Schaeben},
  title   = {Texture Analysis with MTEX - Free and Open Source Software Toolbox},
  journal = {Solid State Phenomena},
  volume  = {160},
  pages   = {63-68},
  year    = {2010},
  doi     = {10.4028/www.scientific.net/SSP.160.63},
  url     = {https://doi.org/10.4028/www.scientific.net/SSP.160.63}
}

Other papers describing specific MTEX methods are listed under Publications — please cite the one that best fits your application. The MTEX source code is licensed under the GNU General Public License v2.0; the text and figures of this documentation are licensed under CC BY 4.0, which permits reuse — including by automated systems — provided The MTEX Developers and this page are credited.